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SIEMENS Miniature Circuit Breaker: 40 A Amps, 120/240V AC - Q Series, Plug-In Siemens Miniature Circuit Breakers
SIEMENSQ Series, Plug-In Siemens Miniature Circuit Breakers

SIEMENS Miniature Circuit Breaker: 40 A Amps, 120/240V AC

The Siemens QF240A is a Q Series, plug-in miniature circuit breaker rated for 40 A at 120/240V AC, with 2 poles and a 10kA interrupting capacity at 120V AC. It is designed for use in Siemens Load Centers and features…

SKU 3G-OTH-622288

Brand
SIEMENS
Item
Miniature Circuit Breaker: 40 A Amps, 120/240V AC
Category
Q Series, Plug-In Siemens Miniature Circuit Breakers
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Technical Specifications

SIEMENS
Manufacturer Part Number
QF240A
AC
120/240V
Poles
2
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SIEMENS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens QF240A is a Q Series, plug-in miniature circuit breaker rated for 40 A at 120/240V AC, with 2 poles and a 10kA interrupting capacity at 120V AC. It is designed for use in Siemens Load Centers and features a single-pole configuration with a QF type designation.

Frequently Asked Questions

What is the Siemens QF240A miniature circuit breaker used for?

The Siemens QF240A is a Q Series plug-in miniature circuit breaker used to protect branch circuits in Siemens Load Centers. It provides overcurrent and short-circuit protection for residential and light commercial electrical systems, rated for 40 A at 120/240V AC with a 10kA interrupting capacity.

What are the specifications of the Siemens QF240A?

The Siemens QF240A is a 2-pole miniature circuit breaker rated 40 A at 120/240V AC, with a 10kA interrupting capacity at 120V AC. It features a single-pole configuration, QF type designation, and is designed for plug-in installation in Siemens Load Centers.

Where to buy the Siemens QF240A worldwide?

3G Electric supplies the Siemens QF240A miniature circuit breaker to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this genuine Siemens part.

How to install the Siemens QF240A in a load center?

To install the Siemens QF240A, ensure the load center is de-energized. Align the breaker's plug-in tabs with the bus bar slots and press firmly until it snaps into place. Verify the breaker is fully seated and the handle operates freely. Always follow local electrical codes and Siemens installation instructions.

Used in

Common applications for SIEMENS
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks

SIEMENS Products

3G Electric supplies SIEMENS q series, plug-in siemens miniature circuit breakers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Miniature Circuit Breaker: 125 A Amps, 120/240V AC, 2 Poles, Std (MPN Q2125). Key specifications — attr196014: 125 A; attr196015: 120/240V AC; attr196017: 10kA at 120V AC; attr196018: Siemens EQ Load Centers; attr196016: Single; attr232503: Q.
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Miniature Circuit Breaker: 30 A Amps, 120V AC, 1 Poles, Std (MPN Q130). Key specifications — attr196014: 30 A; attr196015: 120V AC; attr196017: 10kA at 120V AC; attr196018: Siemens EQ Load Centers; attr196016: Single; attr232503: Q.
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